Toptal
A freelance network where senior engineers run the technical interviews
What is Toptal?
Toptal, founded in 2010 and run as a remote-first company, is a freelance marketplace rather than an employer, and its AI pool covers machine learning, generative AI, NLP and LLM work. Its screening is the most documented of any network here. The FAQ describes a process of three to eight weeks: an English and communication check, algorithm and computer science tests, several technical interviews with senior engineers, and a test project. Toptal says fewer than 3% of applicants get through. New engagements start with a no-risk trial period. The trade-off is price and continuity, because freelancers set their own rates and can leave for another client.
Toptal works primarily with clients in Technology, Finance, Healthcare, Media, Retail sectors. Its primary differentiator is: Multi-stage screening that ends with interviews by senior engineers and a test project.
Toptal tech stack and services
| Service area |
|---|
| ML Engineers |
| LLM Engineers |
| NLP Engineers |
| Engineer-Led Screening |
| Fractional Experts |
| Trial Period |
| Talent Marketplace |
Toptal pricing
Short answer: Toptal uses a freelance hourly or weekly rates set per engineer; no-risk trial period; rates on request pricing approach. Minimum engagement is not publicly disclosed; a discovery call is required.
| Engagement model | Typical range | Best for |
|---|---|---|
| Freelance contract | Variable; depends on team size | Large programmes or team augmentation |
| Fractional expert | Variable; depends on team size | Large programmes or team augmentation |
| Trial period | Variable; depends on team size | Large programmes or team augmentation |
Toptal pros and cons
| Advantages | Things to consider |
|---|---|
| +Engineer-run interviews and a test project are published parts of the screen | -Freelancers are not Toptal employees and may move on to other clients |
| +Part-time and hourly engagements are normal, so a ten-hour-a-week specialist is easy to arrange | -Among the most expensive options on this page, and no public rate card |
| +The no-risk trial lets you stop early without paying if the match is wrong | -The screen is general software screening; there is no published ML-specific test |
Toptal vs alternatives
How Toptal compares to the other top AI Engineer Staffing companies.
| Company | Best for | Key difference | Rating | Compare |
|---|---|---|---|---|
| Tensorway | CTOs who want an engineer, not a recruiter,... | Senior AI engineers run a code review and a specialization-specific task on every candidate | 4.8 | Full comparison |
| deepsense.ai | Teams that need a senior ML researcher who... | A research-heavy bench of about 120 employed AI specialists with ten years of production work | 4.6 | Full comparison |
| Proxify | European companies that want a vetted ML or... | Senior-engineer interviews with live coding after an automated skills test | 4.4 | Full comparison |
| InData Labs | Product teams that need a computer-vision or NLP... | Ten years of computer-vision and NLP delivery in an AI-only company | 4.4 | Full comparison |
| Quantiphi | Enterprises that need many AI roles filled at... | The biggest AI-only bench here, sold through a named staffing program with AWS | 4.3 | Full comparison |
| Neurons Lab | Banks and insurers that need agent or LLM... | A 500-engineer network managed by a small AI-only core team in London | 4.3 | Full comparison |
| Index.dev | Startups that want a 30-day refundable trial before... | A 30-day trial with full refund on every placement | 4.2 | Full comparison |
| Vstorm | Teams whose LLM agent prototype needs engineers who... | A team that works almost entirely on LLM agents and RAG | 4.2 | Full comparison |
| Turing | Companies that need many remote ML and data... | Automated vetting and matching across the largest developer pool on this page | 4.1 | Full comparison |
| Andela | Companies building a long-term remote engineering group outside... | Assessment tooling from its 2026 Woven acquisition plus an in-house AI training academy | 4.1 | Full comparison |
| Uvik Software | Python-heavy teams that want employed senior engineers rather... | A no-freelancer policy with senior Python engineers who average seven years or more | 4.1 | Full comparison |
| SciForce | Healthcare data teams that need NLP or data... | Medical data science experience plus a documented multi-year placement engagement | 4.0 | Full comparison |
| Fusemachines | Cost-conscious companies that want mid-level ML engineers from... | Its own AI education programs feed an employed bench in emerging markets | 4.0 | Full comparison |
| Addepto | Industrial and automotive companies that need data engineers... | Data and ML engineers with industrial and automotive client history | 4.0 | Full comparison |
| Folio3 | Teams that need an MLOps or computer-vision engineer... | Very fast start times with a two-week trial and offshore pricing | 3.9 | Full comparison |
| Azumo | U.S. teams on a tight budget that need... | The lowest published hourly band on this page with full U.S. time-zone overlap | 3.9 | Full comparison |
| BairesDev | U.S. companies that need ML engineers alongside a... | Thousands of Latin American engineers available in U.S. time zones | 3.9 | Full comparison |
| N-iX | Large companies that want ML and data engineers... | Scale and two decades of history in Central European delivery | 3.9 | Full comparison |
| Svitla Systems | Mid-size companies that want one supplier for ML... | Engineers in both Latin American and European time zones from one supplier | 3.9 | Full comparison |
| Data Science UA | Companies that want to hire Ukrainian ML engineers... | A large AI community and conference series that feeds its recruiting | 3.8 | Full comparison |
| Tribe AI | Leadership teams that want a part-time senior ML... | Part-time access to senior ML practitioners from large tech companies | 3.8 | Full comparison |
| Strider | U.S. startups that want to hire a Latin... | Hiring plus retention support for Latin American developers | 3.8 | Full comparison |
| Coderio | U.S. teams that need a managed nearshore squad... | Squads assembled within seven days, with managed delivery as an option | 3.8 | Full comparison |
| Qubit Labs | Cost-conscious teams that can write a precise brief... | Recruiting across several lower-cost Eastern European countries | 3.7 | Full comparison |
| micro1 | AI teams that need many vetted contributors quickly... | Automated AI interviews that screen candidates in high volume | 3.7 | Full comparison |
| Mercor | AI labs and research teams that need specialist... | AI-run interviews and matching built for high-volume expert hiring | 3.7 | Full comparison |
| Harnham | Companies hiring permanent data or ML staff in... | Twenty years of recruiting only in data and analytics | 3.7 | Full comparison |
| KORE1 | U.S. companies that want a local agency to... | A U.S. staffing agency with contract-to-hire terms for AI roles | 3.6 | Full comparison |
Toptal FAQ
What is Toptal?
A freelance network where senior engineers run the technical interviews
How much does Toptal charge?
Toptal uses freelance hourly or weekly rates set per engineer; no-risk trial period; rates on request pricing. Minimum engagement is not publicly disclosed. A discovery call is required to get project-specific quotes.
What tech stack does Toptal use?
Toptal works with Python, PyTorch, TensorFlow, Hugging Face, LangChain, OpenAI, AWS, Google Cloud, Azure. Primary industries served include Technology, Finance, Healthcare, Media, Retail.
Is Toptal right for enterprise?
Engineering leads who need one senior freelance ML specialist quickly and can pay a premium. Staff size not published; large freelance network team size. Key consideration: Freelancers are not Toptal employees and may move on to other clients.
What are the best Toptal alternatives?
The best alternatives to Toptal depend on your use case. Top options are:
- Tensorway: senior ai engineers run a code review and a specialization-specific task on every candidate
- deepsense.ai: a research-heavy bench of about 120 employed ai specialists with ten years of production work
- Proxify: senior-engineer interviews with live coding after an automated skills test
Compare Toptal with other AI Engineer Staffing companies
Verify all details directly with Toptal before making a decision.